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package jdk.graal.compiler.core.common.cfg;

import jdk.graal.compiler.options.OptionValues;

/**
 * Interface to compute an ordering of the blocks that can be used by the machine code generator.
 */
public interface CodeEmissionOrder<T extends BasicBlock<T>> {

    /** Specify when the code emitting order is computed. */
    enum ComputationTime {
        BEFORE_CONTROL_FLOW_OPTIMIZATIONS,
        AFTER_CONTROL_FLOW_OPTIMIZATIONS
    }

    /**
     * Computes the block order used for code emission.
     *
     * @return sorted list of blocks
     */
    int[] computeCodeEmittingOrder(OptionValues options, ComputationTime computationTime);
}
